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Sensory innervation of the upper extremity

Topic: Anatomy

Created on Friday, December 22 2006 by jdmiles

Last modified on Sunday, November 16 2008.

A 532 year-old Vitruvian male presents to your office, complaining of numbness.
You expertly diagnose him as having a mononeuropathy affecting the lateral antibrachial cutaneous nerve.
Which image most accurately illustates the pattern of sensory innervation provided by the lateral antibrachial cutaneous nerve?

'

B)

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C)

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D)

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E)

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This question was created on December 22, 2006 by jdmiles.
This question was last modified on November 16, 2008.

ANSWERS AND EXPLANATIONS

A) '

This answer is incorrect.

The distribution of sensory innervation illustrated in this image best corresponds to the dorsal antibrachial cutaneous nerve. (See References)


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B) '

This answer is correct.

The following image illustrates the distribution of sensory innervation of some of the named nerves in the upper extremity.

(See References)


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C) '

This answer is incorrect.

The distribution of sensory innervation illustrated in this image best corresponds to the median nerve. (See References)


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D) '

This answer is incorrect.

The distribution of sensory innervation illustrated in this image best corresponds to the axillary nerve. (See References)


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E) '

This answer is incorrect.

The distribution of sensory innervation illustrated in this image best corresponds to the superficial branch of radial nerve. (See References)


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References:

1. Gray, Henry. (1918). Anatomy of the human body 20th ed. Philadelphia: Lea & Febiger. (ASIN:B000TW11G6)

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anatomy
Sensory innervation of the upper extremity
Question ID: 810200601
Question written by J. Douglas Miles, (C) 2006-2009, all rights reserved.
Created: 12/22/2006
Modified: 11/16/2008
Estimated Permutations: 0